FormatOwlHow to Compress an Image Without Unwanted Quality Loss
A smaller image can look nearly the same, but there is no universal setting that preserves every pixel. Start with a light preset and compare the result at normal viewing size and full zoom.
Open the image compressorStart with the source format
Upload a supported JPG, PNG, WebP, GIF or HEIC image. The compressor keeps the source format. If you need another format, use the image converter first and check transparency or animation separately.
Try Light, Balanced, then Strong only if the file is still too large. Look at text edges, faces, gradients and transparent areas. An already optimized image may be returned unchanged.
A measured JPG example
A generated 1,800 × 1,200 JPG test image occupied 2,782,624 bytes. In a local processor run on September 23, 2026, Light produced 986,457 bytes, Balanced 707,813 bytes and Strong 508,740 bytes.
These are results for that test image, not promised savings for other files. Choose the least aggressive result that meets your size and visual needs.
Know when to keep the original
If the output looks worse or is not smaller enough, keep the original or adjust the resolution separately. Compression cannot recreate detail discarded by an earlier export.